Dr. Jonathan Chan

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PHOTO: Tumeric powder is shown in this undated file photo. — Adobe Stock

The FDA wants to replace artificial food dyes, but natural alternatives may have drawbacks too

PHOTO: A girl sits at a table, using a glucometer to measure her blood sugar. — Getty Images

Inhaled insulin now FDA-approved for kids 6 and over with diabetes

PHOTO: An undated stock photo of a doctor with a patient. — STOCK PHOTO/Getty Images

New guidelines could help millions more Americans get colon cancer testing

PHOTO: Red Cross workers walk in a formation as they disinfect Rwampara general hospital in Rwampara outside Bunia, Ituri province, Democratic Republic of Congo, May 21, 2026. — Gradel Muyisa Mumbere/Reuters

Why travel restrictions may have unintended consequences as US bars some visitors amid Ebola outbreak

Dental Chair In Dental Clinic — STOCK PHOTO/Getty Images

Health officials warn patients of potential HIV, hepatitis exposure at Philadelphia dental office

PHOTO: A visitor washes his hands before entering Kyeshero Hospital at a checkpoint in Goma, Democratic Republic of Congo, on May 18, 2026. — Jospin Mwisha/AFP via Getty Images

Ebola outbreak sees 136 suspected deaths in DRC, officials say

PHOTO: Stock photo of a dog and cat being fed. — Simpleimages/STOCK PHOTO/Getty Images

Can I get hantavirus from my pet? Here's what pet owners should know

Healthy lifestyle and medical concept — Seb_ra/Getty Images

PCOS gets a new name: What to know about the most common hormonal issue affecting women

People gather on a lawn at Central Park on an unseasonably warm spring day in Manhattan on May 05, 2026, in New York City. — Spencer Platt/Getty Images

Could 8,500 daily steps help keep weight off?

PHOTO: Test tubes labelled "Hantavirus positive" in this illustration taken May 7, 2026. — Dado Ruvic/Reuters

Here's what to know about hantavirus vaccines after the cruise ship outbreak

PHOTO: In this undated stock image, a patient prepares to enter an MRI machine. — STOCK IMAGE/Getty Images

Full-body MRI scans are selling reassurance doctors say they can’t deliver

PHOTO: President Donald Trump speaks during an event with small businesses, May 4, 2026, in the East Room at the White House in Washington. — Kylie Cooper/Reuters

Trump stops short of saying Iran violated ceasefire: 'not heavy firing'

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